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RE: Replace values based on external files

2005-01-14 03:18:26
Hi,

I need to implement a XSL that will replace text values in file1.xml
based on replacement information in file2.xml.

file2.xml provides an XPath that points to an attribute / 
element value
and a replacement value. The XML has the form of:

<mapping>
    <!-- should replace @attribute1 value that are 'foo' of 
all element1
elements in file1.xml with 'bar'-->
    <replace>  
        <xpath>//element1/@attribute1[.='foo']</xpath>
        <with>bar</with>
    </replace>
    <replace>
        ...                    <!-- other replacement operations -->
    </replace>
    ...
</mapping>

Is there an easy way to dynamically generate replacement 
instructions in
my XSL. I thought of extracting replacement information from file2.xml
with the document function.

Either run file2.xml through

<xsl:stylesheet version="1.0"
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
                xmlns:axsl="http://www.w3.org/1999/XSL/Transform/alias";>
  <xsl:namespace-alias stylesheet-prefix="axsl" result-prefix="xsl"/>
  <xsl:template match="mapping">
    <axsl:stylesheet version="1.0">
      <xsl:for-each select="replace">
        <axsl:template match="{xpath}">
          <axsl:attribute name="{{name()}}">
            <xsl:value-of select="with"/>
          </axsl:attribute>
        </axsl:template>
      </xsl:for-each>
      <axsl:template match="@* | node()">
        <axsl:copy>
          <axsl:apply-templates select="@* | node()"/>
        </axsl:copy>
      </axsl:template>
    </axsl:stylesheet>
  </xsl:template>
</xsl:stylesheet>

and then process file1.xml with the generated stylesheet. Or use Mike's 
solution that used the extension function.

Cheers,

Jarno

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